Avoid subscription fees: how to access free frontier model APIs

For: Developers, indie makers, and anyone dodging monthly AI subscriptionsRecommended: Google AI StudioAMD Token FactoryOpenCode

What you need

A standard Google account (AI Studio) or GitHub account (AMD/OpenCode)
A local client like Cherry Studio, NextChat, or Cursor

Say this

Help me configure and test a free frontier LLM API.
My client is (Cherry Studio/Cursor/terminal). Give me the exact Base URL, Model ID, and verification steps.
Also remind me: what sensitive data must never touch free tiers?

Then you can say

How do I handle HTTP 429 rate limits?
How do I inject this free API into a Python script?
Which platform supports direct domestic routing?

Watch out

Official free tiers typically retain interaction data for model training — never transmit proprietary source code, trade secrets, or database passwords.